Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems.

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #1   Report Post  
Posted to sci.electronics.repair
external usenet poster
 
Posts: 4
Default CRT Monitor Philips black screen when cold

Hallo!
My CRT monitor, Philips 109B, has black screen after 2 seconds when it is
cold: the picture becomes bigger and fades away.
If I turn it off and turn on, the picture again becomes bigger and fades
out.
When it is warm, after 20-30 minutes, if I turn it off and turn on, the
screen appears and works very good.
Could it be a cap?
Thank you!
S.


  #2   Report Post  
Posted to sci.electronics.repair
external usenet poster
 
Posts: 1,001
Default CRT Monitor Philips black screen when cold

Steinway wrote:

Hallo!
My CRT monitor, Philips 109B, has black screen after 2 seconds when it is
cold: the picture becomes bigger and fades away.
If I turn it off and turn on, the picture again becomes bigger and fades
out.
When it is warm, after 20-30 minutes, if I turn it off and turn on, the
screen appears and works very good.
Could it be a cap?
Thank you!
S.


Get your solder iron out and start cleaning up those joints..

Jamie



  #3   Report Post  
Posted to sci.electronics.repair
external usenet poster
 
Posts: 5,247
Default CRT Monitor Philips black screen when cold

Jamie t wrote in message
...
Steinway wrote:

Hallo!
My CRT monitor, Philips 109B, has black screen after 2 seconds when it

is
cold: the picture becomes bigger and fades away.
If I turn it off and turn on, the picture again becomes bigger and fades
out.
When it is warm, after 20-30 minutes, if I turn it off and turn on, the
screen appears and works very good.
Could it be a cap?
Thank you!
S.


Get your solder iron out and start cleaning up those joints..

Jamie




If the picture is changing X and Y dimensions then an acceleration voltage
is playing up, reducing magnitude leading to increasing dimensions but
fading image


  #4   Report Post  
Posted to sci.electronics.repair
external usenet poster
 
Posts: 19
Default CRT Monitor Philips black screen when cold

bad cap in the flyback xfmr


"Steinway" slkjdskd wrote in message
. ..
Hallo!
My CRT monitor, Philips 109B, has black screen after 2 seconds when it is
cold: the picture becomes bigger and fades away.
If I turn it off and turn on, the picture again becomes bigger and fades
out.
When it is warm, after 20-30 minutes, if I turn it off and turn on, the
screen appears and works very good.
Could it be a cap?
Thank you!
S.



  #5   Report Post  
Posted to sci.electronics.repair
external usenet poster
 
Posts: 39
Default CRT Monitor Philips black screen when cold

"Steinway" slkjdskd wrote in
:

Hallo!
My CRT monitor, Philips 109B, has black screen after 2 seconds when it
is cold: the picture becomes bigger and fades away.
If I turn it off and turn on, the picture again becomes bigger and
fades out.
When it is warm, after 20-30 minutes, if I turn it off and turn on,
the screen appears and works very good.
Could it be a cap?
Thank you!
S.




Junk it! It's time to upgrade to a flatscreen.

A new flatscreen twice as big as the CRT and a hundred kilos lighter
costs half as much as fixing the old CRT.



  #6   Report Post  
Posted to sci.electronics.repair
external usenet poster
 
Posts: 125
Default CRT Monitor Philips black screen when cold

On 30/01/2011 5:26 PM, Fred wrote:
"Steinway"slkjdskd wrote in
:

Hallo!
My CRT monitor, Philips 109B, has black screen after 2 seconds when it
is cold: the picture becomes bigger and fades away.
If I turn it off and turn on, the picture again becomes bigger and
fades out.
When it is warm, after 20-30 minutes, if I turn it off and turn on,
the screen appears and works very good.
Could it be a cap?
Thank you!
S.




Junk it! It's time to upgrade to a flatscreen.

A new flatscreen twice as big as the CRT and a hundred kilos lighter
costs half as much as fixing the old CRT.


Depends how much it costs to fix the CRT. If it's a bad cap, it might be
obvious which one just by looking at it (bulging top and/or leaking),
and the fix, excluding the OP's time, may cost a few dollars.

The OP should of course make sure he's aware of the hazards associated
with CRTs even when there's no power applied.

Sylvia.
  #7   Report Post  
Posted to sci.electronics.repair
external usenet poster
 
Posts: 4
Default CRT Monitor Philips black screen when cold


"Sylvia Else" ha scritto nel messaggio
...

Depends how much it costs to fix the CRT. If it's a bad cap, it might be
obvious which one just by looking at it (bulging top and/or leaking), and
the fix, excluding the OP's time, may cost a few dollars.

The OP should of course make sure he's aware of the hazards associated
with CRTs even when there's no power applied.

Sylvia.


In fact I'd like to repair it myself, without OP's time - if I can't repair
it, I buy another monitor


  #8   Report Post  
Posted to sci.electronics.repair
external usenet poster
 
Posts: 4
Default CRT Monitor Philips black screen when cold


"circuit" ha scritto nel messaggio
...
bad cap in the flyback xfmr



Thank you!


  #9   Report Post  
Posted to sci.electronics.repair
external usenet poster
 
Posts: 125
Default CRT Monitor Philips black screen when cold

On 30/01/2011 7:20 PM, Steinway wrote:
"Sylvia ha scritto nel messaggio
...

Depends how much it costs to fix the CRT. If it's a bad cap, it might be
obvious which one just by looking at it (bulging top and/or leaking), and
the fix, excluding the OP's time, may cost a few dollars.

The OP should of course make sure he's aware of the hazards associated
with CRTs even when there's no power applied.

Sylvia.


In fact I'd like to repair it myself, without OP's time - if I can't repair
it, I buy another monitor


I'm confused, or perhaps just befuzzled. Aren't you the OP (original
poster)?

Sylvia.

  #10   Report Post  
Posted to sci.electronics.repair
external usenet poster
 
Posts: 4
Default CRT Monitor Philips black screen when cold


"Sylvia Else" ha scritto nel messaggio
...


I'm confused, or perhaps just befuzzled. Aren't you the OP (original
poster)?

Sylvia.


Yes, I am the original poster, Steinway!




  #11   Report Post  
Posted to sci.electronics.repair
external usenet poster
 
Posts: 39
Default CRT Monitor Philips black screen when cold

Sylvia Else wrote in news:8qkkteFd62U1
@mid.individual.net:

Depends how much it costs to fix the CRT. If it's a bad cap, it might be
obvious which one just by looking at it (bulging top and/or leaking),
and the fix, excluding the OP's time, may cost a few dollars.

The OP should of course make sure he's aware of the hazards associated
with CRTs even when there's no power applied.

Sylvia.



OP's savings in electric bill ALONE justifies buying the new LCD, even if
he can fix it for free.

  #12   Report Post  
Posted to sci.electronics.repair
external usenet poster
 
Posts: 12,924
Default CRT Monitor Philips black screen when cold


Fred wrote:

Sylvia Else wrote in news:8qkkteFd62U1
@mid.individual.net:

Depends how much it costs to fix the CRT. If it's a bad cap, it might be
obvious which one just by looking at it (bulging top and/or leaking),
and the fix, excluding the OP's time, may cost a few dollars.

The OP should of course make sure he's aware of the hazards associated
with CRTs even when there's no power applied.

Sylvia.



OP's savings in electric bill ALONE justifies buying the new LCD, even if
he can fix it for free.



That depends on how much use it gets.


--
You can't fix stupid. You can't even put a band-aid on it, because it's
Teflon coated.
Reply
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules

Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Philips IC SMPS "cold side controller" P/N 612771-1 ?????????????? Philips Dave Moore[_2_] Electronics Repair 2 September 22nd 07 05:49 AM
Philips MP3 player only gives a white screen Boba Electronics Repair 1 June 7th 06 12:20 AM
Black screen on PC monitor Joust Electronics Repair 2 March 14th 06 02:14 AM
mitac L1450PD monitor black screen BigTom Electronics Repair 2 December 14th 04 01:16 PM
CASSWELL COLD BLACK OXIDE WAS Black Oxide "how to"?? in a small scale Pedroman Metalworking 1 February 17th 04 03:48 PM


All times are GMT +1. The time now is 07:11 AM.

Powered by vBulletin® Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright ©2004-2024 DIYbanter.
The comments are property of their posters.
 

About Us

"It's about DIY & home improvement"